Bitrate Starter is an application built using Adobe Air designed to help you determine audio and video bitrate given multiple parameters; using it is fairly easy, simple select the audio and video codecs, aspect ratio, width, height, frame rate, scene composition, motion & pacing, audio channels

Xiph.Org Open Codecs - most complete implementation of the Xiph.org codecs for Windows and DirectShow. This includes decoders and encoders for all the Xiph.org formats as well as Annodex.
Seeking is disabled for Ogg Vorbis, Theora and Speex. WebM/VP8 is not supported, and, there are no arm assembly

Mac Software

iFunia YouTube to MP3 Converter for Mac is an easy-to-use Mac youtube audio downloader and extracter which can batch download YouTube videos and then convert them to MP3, AAC, WAV, WMA and OGG audio files at super speed and high output audio quality.You can directly copy URL of YouTube video/audio w

Xilisoft Audio Converter Pro for mac is an all-in-one professional audio converter for audio conversion, audio extraction, audio CD ripping and making, with which you can convert between different audio formats including MP3, WMA, WAV, AAC, FLAC, OGG, APE, extract audio from video formats such as AV

Audio converter for Mac is able to convert almost all popular audio formats like mp3, mka, wav, m4a, m4v,aac, ac3, aiff, amr, flac, wma, mp2.and convert video to audio, so that you can easily get your intended audio format for your specific purpose.